Hints: Naples Africa Europe the Mediterranean Sea Gibraltar the Atlantic

Today the city of Naples lies sprawled across its lower slopes. Who knows when another nudge from Africa would set it off again? It isn't just Europe's southern mountains that owe their existence to the advancing African plate. So too, does the Mediterranean Sea.
This sea is one of the defining boundaries of the continent. With its spectacular coastline and clear blue waters, it's one of Europe's great natural treasures. Much of the Mediterranean's extraordinary history hinges on the narrow seaway at its western end. At the Rock of Gibraltar, only 14 kilometers now separate Europe from Africa. About 6 million years ago, the northward push of Africa, combined with a drop in sea level, created a vast dam, cutting off the Mediterranean from the Atlantic.

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